<template>
  <div>
    <div class="search">
      <input v-model="keyword" type="text" class="search-input" placeholder="输入城市名或拼音">
    </div>
    <div class="search-content" ref="search" v-show="keyword">
      <ul>
        <li class="search-item border-bottom" v-for="item of list" :key="item.id" @click = 'handleCityClick(item.name)'>{{item.name}}</li>
        <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
      </ul>
    </div>
  </div>
</template>
<script>
import {mapMutations} from 'vuex'
import  Bscroll from 'better-scroll'
export default {
  name: "CitySearch",
  props:{
      cities:Object
  },
  data() {
      return {
          keyword:'',
          list:[],
          timer: null
      }
  },
  watch: {
      keyword () {
          if(this.timer){
              clearTimeout(this.timer)
          }
          if(!this.keyword){
              this.list = []
              return
          }
          this.timer = setTimeout( () =>{
              const result = []
              for(let i in this.cities){
                  this.cities[i].forEach((value) => {
                      if(value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1){
                          result.push(value)
                      }
                  });
              }
              this.list = result
          },100)
      }
  },
  methods: {
     handleCityClick (city) {      
            this.changeCity(city)
            this.$router.push('/')
        },
        ...mapMutations(['changeCity'])
  },
  mounted() {
      this.scroll = new Bscroll(this.$refs.search)
  },
  computed:{
      hasNoData () {
          return !this.list.length
      }
  }
};
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl';

.search 
  height: 0.72rem;
  background: $bgColor;
  padding: 0 0.1rem;

  .search-input {
    text-align: center;
    height: 0.62rem;
    line-height: 0.62rem;
    width: 100%;
    border-radius: 0.06rem;
    color: #666;
    padding: 0 0.2rem;
    box-sizing: border-box;
  }
.search-content
    z-index 1
    overflow hidden
    position absolute
    top 1.58rem
    left 0
    bottom 0
    right 0
    background #eee
    .search-item
        line-height .62rem
        padding-left .2rem
        color #666
        background #fff
</style>